Stone-surfacing machine



Feb. 24, 1931.

L. F DRAKE STONE SURFACING MACHINE Filed June 4 1925 INVENTOR.

Patented; Feb. 24, 1931 ing performed.

UNITED STATES eTEN b? I LOUIS 1*. Damn, or BARBIE, VERMONTs'roiiri-sinwacrwe;lvracnrrizi'.. I

' Application filed June 4,

' Drawings Figure 1 is a side view of a surfacing machineconstructeda'nd arranged in accordance with the present invention. 7

Figure 2 is a;..detailed view of a governor for limiting the movement ofthe supporting mechanism. I c

Description As seen in the drawings the stone surfacing machine isprovided with a boom 7 which is horizontally extended from 'a travellinghead 8. The head 8 is slidably mounted-on the mast 9 which is carried bythe truck 10 on the rail of a road bed, suitably arranged with referenceto the working bench 11 or other work holding device.

To elevate and lower the head 8, a winch 12 is providedrat the outer endof the boom 4. The guy lines 13 leading from the drum I of the winch 12are passed over suitable pul-' leys 14, those at the top of the mastbeing permanently fixed on the mast, while those on the'carrier 8 arepermanently fixed on the carrier 8. The guy line 13 is so arranged thatwhen it is Wound on the drum of the winch 12, the carrier 8 is elevatedon the mast 9, and when the guy line is paid out, the head 8 is loweredon the mast 9 carrying the boom 7.

The boom 7 provides a trackway for a stirrup' hanger 15 in which ismounted the sur facing tool 16. The stirrup hanger 15 is pro vided withsupporting and guide rollers 17 and 18, respectively. Y

The tool 16 as shown in the drawings is of a pneumatic power type, theair under compression being deliveredthereto by a pipe 1925. aar nbl35,629.1

19, the-fragment only or which a shown in the accompanying drawings;

* Adjacent the cutting end of the toolff'20 is a dust,collectouhead21..The head' '21 ispermanently mountedin the-flexible suction pipe 22which in turn is connected with the suitable. rigid pipe section 23'an'd'throu'gh it to a blower24.

To support the pipe 22 inits preferred I woi-king position, I provideclamp collars 25 9 V mounted on the hanger 15-. The collars 25arearranged to grip the pipe 22ffirmlyfsothat the collector head 2f isat all times main tainedin the hired position 'rel'ative to the; v 1To'silpport the body o'f thepi'pje 22I provide 1 tool 20." 5

a saddle comprising the. curved extremity of the supporting" arm'26."The arm' 26 is provided with a series of U-shaped holders 271130 formarack for thepipe 22. The arm26 is 7 counter balanced'by a weight 28whiohlis-slid ably mounted on thearin 26fat' the short end tlie'ireof;'The'arm' 26 is pivoted on ashaft. 29 which isfextended fromthe bracket30,the

lower end whereof is rigidly bolted to'the head 8. *Itis providedthatthe Weight'28 shall always slightly overbalance the weight of thepipe 22 so that the loop, or'bend thereof will. atall" times be liftedabove the hanger 15, and the boom 7 As the'han ger'15 and partsassociated therewith are "moved out wardly toward the end-ofthe booin-7, the pipeline 22 will be lowered, and the supporting arm will yieldand be depressed thereby.

A slotted link 31 is pivotally mounted by, I

the pin 32 on the split collar bracket 33. The slot 34 provided in thelink is engagedby a pin 35 extended from the head 8. The purpose of thelink 31 and 35 is to guide and limit the movement of the supporting arm26 and pipe 22 carried thereby. I g V 7 As will be seen in Fig. 20f thedrawings, when the pipe 26 is in the position Where the curved end ofthe saidpipe is in its lowermost pos1t1on,the pm 35 rests in the far endof the slot 34in the link 31. I

From the foregoing it will be seenthat when the dust collector head 21is positioned operat-lvely adjacent the tool 20, and the blower 24 isoperating, any dust incident to the operation of the tool 16 and 20 isimmediately taken into the pipes 22 and 23 to be delivered by the blower24. Also it will be seen that while the body of the pipe 22 is liftedand therefore removed as an obstruction, the tool 16 and partsassociated therewith may be moved lengthwise of the boom 7, which inturn is arranged to swing? about themast 9 thus permitting the tool 20to traverse the entire surface of the stone block A, which is beingtreated. 1

' And further, it will be observed that during 2 i the movement of thetool, the looped portion 9 of the pipe 22 and the end of the supportingarm 26, have been raised and lowered in response ,to the pull or strainon the pipe 22,

connected with the clamp collars 25, the counter-balancing weight 28alwaysmaintaining V a liftingstrain on the arm 26 sulficient to raiset'ool hanger 2- A support for a the looped portion of the pipe 22whenever permitted to do so by the movement of the Claims: 1. A supportfor aflexible pipe line comprisingamovable head an arm having a oonvex.downward portion, means for'pivotally supporting said arm at saidportion on said movable head,said" arm extending upwardly and outwardlyfrom the pivoton one side thereof and terminating in aconvex' upwardcurve, the pipe line being adapted to bev supported on top of the convexupward portion of thearm, and a weight carried on the otherend'ofsaidarmf 1 flexible pipeline comprising an arm havingla convex"downward portion, a supporting head, means for pivot-r ally supportingsaid arm at said portion upon said supporting heachsaid armextending upswardly and outwardly from the pivot on one side thereof and terminatingin a convex upward curve, the pipe li-ne being adapted to be s11 pportedby the convex upward portion of the arm, aweight carried on theother endof said arm, and a link connecting said arm with said supporting headand limiting the pivotal movementof said arm. 1 LOUIS DRAKE.

